<template>
  <div class="list" ref="wrapper">
    <div >
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.$store.state.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hotCities" :key="item.id" @click="handleCity(item.name)" >
            <div class="button" >{{item.name}}</div>
          </div>
        </div>
      </div>
      <!-- ABCD -->
      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="inneritem of item" :key="inneritem.id" @click="handleCity(inneritem.name)">{{inneritem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import BScroll from 'better-scroll'
export default{
  name: 'CityList',
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  methods: {
    handleCity (city) {
      this.$store.dispatch('changeCity', city)
      this.$router.push('/')
      // 派发
    }
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter]
        this.scroll.scrollToElement(element[0])
      }
    }
  }
}
</script>
<style lang="stylus" scoped>
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc
  .list
    overflow hidden
    position absolute
    top 1.78rem
    left 0
    right 0
    bottom 0
  .title
    line-height .54rem
    background #eee
    padding-left .2rem
    color #666
    font-size .26rem
  .button-list
    padding .1rem
    overflow hidden
    padding .1rem .6rem .1rem .2rem
    .button-wrapper
      float left
      width 33.33%
      .button
        padding .1rem 0
        text-align center
        margin .1rem
        border .02rem solid #ccc
        border-radius .06rem
  .item-list
    .item
      line-height .76rem
      padding-left .2rem
  .border-bottom
    &:before
      border-color #ccc
</style>
